Connecting fitting for power transmission and distribution lines that adapts to different wire diameters

Abstract

The present invention discloses a connecting fitting for a power transmission and distribution line that can adapt to different wire diameters, which includes a fitting body and cable connecting devices installed at both ends of the fitting body; the cable connecting device includes a movable pressing disc for pressing the cable onto the fitting body, one end of the movable pressing disc is hinged to the fitting body; a movable pressing disc control device for controlling the pressing line spacing between the movable pressing disc and the fitting body is provided on the fitting body corresponding to the other end of the movable pressing disc. This connecting fitting has strong adaptability, realizes reliable and rapid clamping connection and unlocking of two connected cables with different wire diameters, and can adapt to the wire diameter difference between the left and right connected cables, and can realize reliable pressing of the left and right connected cables with different wire diameters, thereby ensuring reliable transmission of current; and this connecting fitting is simple and convenient to operate; the fitting has a simple structure, good processing technology and assembly technology.

Description

Technical Field

[0001] The present invention relates to a connecting fitting adapted to different wire diameters for power transmission and distribution lines. Background Art

[0002] A wire connecting fitting is an iron or aluminum metal accessory used to connect two cables. Most of them need to bear a large tensile force during operation, and some also need to ensure good electrical contact at the same time. However, for the current connecting fitting used for connecting two cables, the structure for pressing the cables is of a fixed size, and the following problems will occur during actual use: Since the diameters of the two cables to be connected are different, the connecting fitting cannot press the two cables to be connected at the same time, and reliable connection of the two cables cannot be achieved, or the connection of the two cables cannot be achieved at all. Summary of the Invention

[0003] The purpose of the present invention is to provide a connecting fitting adapted to different wire diameters for power transmission and distribution lines to solve the problem that the current connecting fitting cannot be applied to the connection of cables with different diameters.

[0004] To solve the above technical problems, the present invention provides a connecting fitting adapted to different wire diameters for power transmission and distribution lines, including a fitting body and cable connecting devices installed at both ends of the fitting body; the cable connecting device includes a movable pressing disc for pressing the cable on the fitting body, and one end of the movable pressing disc is hinged to the fitting body; a movable pressing disc control device for controlling the pressing line spacing between the movable pressing disc and the fitting body is provided on the fitting body corresponding to the other end of the movable pressing disc.

[0005] Further, the movable pressing disc is in an arc shape conforming to the cable, the concave surface of the movable pressing disc faces the fitting body, and a plurality of movable ratchet teeth are arranged circumferentially along the outer side surface of the movable pressing disc; the movable pressing disc control device includes a locking ratchet claw for meshing and moving along the movable ratchet teeth on the movable pressing disc and a locking ratchet claw controller for controlling the movement of the locking ratchet claw. The bottom of the locking ratchet claw is hinged to the fitting body, and a locking ratchet tooth matched with the movable ratchet tooth is provided in the upper middle part of the side of the locking ratchet claw facing the movable pressing disc; the locking ratchet claw controller is used to control the locking ratchet claw to rotate around the second hinge point, so that the locking ratchet tooth of the locking ratchet claw approaches the movable pressing disc and moves along the movable ratchet teeth of the movable pressing disc to achieve locking, or the locking ratchet tooth of the locking ratchet claw moves away from the movable ratchet teeth of the movable pressing disc to achieve unlocking.

[0006] Further, the locking ratchet claw controller includes an elastic adjusting device provided on the side of the locking ratchet claw away from the movable pressing disc for adjusting the acting force between the movable ratchet tooth at the top of the locking ratchet claw and the movable pressing disc; the elastic adjusting device includes a movable lock block; a horizontal limiting device is provided on the side of the movable lock block away from the movable lock block; a reed is provided between the locking ratchet tooth and the movable lock block;

[0007] A horizontally protruding locking block A and a spring limit block A are provided on one side of the locking pawl away from the movable pressing plate. The locking block A is arranged at the middle and upper part of the locking pawl, and the spring limit block A is arranged at the bottom of the locking pawl; a locking block B corresponding to the locking block A is provided at the middle and upper part of the movable locking block;

[0008] The spring is in the shape of a downwardly curved arc, and the two ends of the spring apply a slight outward force to the two opposite side walls of the locking pawl and the movable locking block respectively, and the two ends of the spring are respectively abutted against the locking block A and the locking block B, and the bottom of the spring is abutted against the spring limiting block A; a side of the spring contacting the movable locking block is provided with a spring limiting protrusion protruding outward, and the side wall of the movable locking block is provided with a first groove and a second groove matching the spring limiting protrusion; the first groove and the second groove are arranged in an up-and-down arrangement, and when the spring limiting protrusion is aligned with the first concave, the locking block A and the locking block B are abutted against each other in the same horizontal plane; if the spring limiting protrusion is aligned with the second concave, the locking block A is below the locking block B.

[0009] Furthermore, the locking pawl controller also includes a movable lock block adjustment control device for controlling the up and down movement of the movable lock block; the movable lock block adjustment control device includes a pressing mechanism arranged on the top of the movable lock block for pressing the movable lock block downward and a lifting block arranged on the movable lock block for lifting the movable lock block upward.

[0010] Furthermore, the pressing mechanism includes a shift block arranged on the top of the movable locking block, the shift block includes a shift block arm, one end of the shift block arm is connected to the hardware body through a rotating shaft, and the pressing operation of the movable locking block is achieved by shifting the shift block arm to press against the top of the movable locking block.

[0011] Furthermore, the length between the shift block arm and the rotating shaft is less than or equal to the distance between the outermost point of the top of the movable locking block and the rotating shaft, and the length between the shift block arm and the rotating shaft is greater than or equal to the distance between the center point of the top of the movable locking block and the rotating shaft.

[0012] Furthermore, the length between the shift block arm and the rotation axis is greater than or equal to the distance between the outermost point of the locking pawl and the rotation axis.

[0013] Furthermore, the horizontal limit device includes a locking device fixing block, the locking device fixing block includes a movable lock block limiting block arranged on the side of the movable lock block away from the locking pawl; the top of the locking pawl facing the movable pressure plate is provided with a sunken step, the top of the movable lock block limiting block is provided with a locking pawl anti-rotation block, the locking pawl anti-rotation block includes a horizontal portion and an arc-shaped portion, one end of the horizontal portion is connected to the top of the movable lock block limiting block, and the other end extends horizontally toward the end where the locking pawl is provided and is connected to one end of the arc-shaped portion, and the other end of the arc-shaped portion is bent downward and abuts against the step at the top of the locking pawl.

[0014] Further, the top block is a bolt. A horizontally arranged bolt limit block is provided at the bottom of the fixing block of the locking device. A small hole matching the bolt is provided on the bolt limit block. A laterally protruding bolt acting block is provided at the bottom of the movable lock block.

[0015] Further, an arc-shaped groove matching the concave surface of the movable pressing disc is provided on the fitting body.

[0016] The beneficial effects of the present invention are as follows: This connecting fitting has strong adaptability, can realize reliable and rapid clamping connection and unlocking of two connected cables with different wire diameters, and can adapt to the wire diameter difference between the left and right connected cables, and can realize reliable pressing of the left and right connected cables with different wire diameters, thereby ensuring reliable transmission of current; and this connecting fitting is simple and convenient to operate; the fitting has a simple structure, good machining processability and assembly processability. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The drawings described herein are used to provide a further understanding of the present application and form a part of the present application. The same reference numerals are used to represent the same or similar parts in these drawings. The schematic embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation to the present application. In the drawings:

[0018] Figure 1 is the front view of an embodiment of the present invention;

[0019] Figure 2 is the top view of an embodiment of the present invention;

[0020] Figure 3 is the structural schematic diagram of the movable pressing disc of an embodiment of the present invention;

[0021] Figure 4 is the structural schematic diagram of the locking pawl of an embodiment of the present invention;

[0022] Figure 5 is the structural schematic diagram of the dial block of an embodiment of the present invention;

[0023] Figure 6 is the structural schematic diagram of the fixing block of the locking device of an embodiment of the present invention;

[0024] Figure 7 is the structural schematic diagram of the reed of an embodiment of the present invention;

[0025] Figure 8 is the structural schematic diagram of the movable lock block of an embodiment of the present invention.

[0026] Among them: 1. Hardware body; 2. Movable clamping plate; 21. Hinge point; 22. Movable ratchet; 23. Clamping surface; 3. Locking pawl; 31 Locking ratchet; 32. Downward pressure point; 33. Locking block A; 34 Support hole; 35. Spring limit block; 4. Shift block; 41. Rotating shaft; 42. Shift block arm; 5. Locking device fixing block; 51. Locking pawl anti-rotation block; 52. Movable lock block limit block; 53. Latch hole; 6 Spring; 61. Upper side of spring; 62. Spring limit protrusion; 63. Bottom of spring; 7. Movable lock block; 71. Locking block B; 72. Top of movable lock block; 73. Side of movable lock block; 74. Unlocking position; 75. Locking position; 76. Latch action block; 8. Cable I; 9. Cable II. DETAILED DESCRIPTION

[0027] like Figure 1 The connecting fittings shown in the figure are used for power transmission and distribution lines and are adaptable to wires of different diameters, and include a fitting body 1 and cable connecting devices installed at both ends of the fitting body 1; the cable connecting device includes a movable clamping plate 2 for clamping the cable on the fitting body 1, and one end of the movable clamping plate 2 is hinged to the fitting body 1; a movable clamping plate 2 control device is provided on the fitting body 1 corresponding to the other end of the movable clamping plate 2, and is used to control the wire pressing distance between the movable clamping plate 2 and the fitting body 1.

[0028] The movable pressing plate 2 is in an arc shape that conforms to the cable, and the concave surface of the movable pressing plate 2 ( Figure 3 The clamping surface 23 in the middle is arranged facing the hardware body 1, and a plurality of movable ratchets 22 are arranged circumferentially along the outer side surface of the movable clamping plate 2 on the movable clamping plate 2; the movable clamping plate 2 control device includes a locking pawl 3 for engaging and moving along the movable ratchet 22 on the movable clamping plate 2 and a locking pawl 3 controller for controlling the movement of the locking pawl 3, the bottom of the locking pawl 3 is hinged to the hardware body 1, and a locking ratchet 31 matching the movable ratchet 22 is provided on the middle and upper part of one side of the locking pawl 3 facing the movable clamping plate 2; the locking pawl 3 controller is used to control the locking pawl to rotate around the second hinge point 34, so that the locking ratchet 31 of the locking pawl 3 approaches the movable clamping plate 2 and moves along the movable ratchet 22 of the movable clamping plate 2 to achieve locking, or the locking ratchet 31 of the locking pawl 3 is away from the movable ratchet 22 of the movable clamping plate 2 to achieve unlocking.

[0029] The locking pawl 3 controller includes an elastic adjustment device which is arranged on the side of the locking pawl 3 away from the movable pressure plate 2 for adjusting the force between the movable ratchet 22 at the top of the locking pawl 3 and the movable pressure plate; the elastic adjustment device includes a movable locking block 7; a horizontal limiting device is provided on the side of the movable locking block 7 away from the movable locking block 7; a spring leaf 6 is provided between the locking ratchet 31 and the movable locking block 7.

[0030] One side of the locking pawl 3 away from the movable pressing disc 2 is provided with a horizontally protruding locking block A33 and a reed limiting block A35. The locking block A33 is arranged in the upper middle part of the locking pawl 3, and the reed 6 limiting block A is arranged at the bottom of the locking pawl 3; a locking block B71 corresponding to the locking block A33 is arranged in the upper middle part of the movable locking block 7.

[0031] The reed 6 is in a downwardly curved arc shape. The two ends of the reed 6 respectively apply a slightly outward acting force to the two opposite side walls of the locking pawl 3 and the movable locking block 7, and the two ends of the reed 6 are respectively in contact with the locking block A33 and the locking block B71. The bottom of the reed 6 is in contact with the reed 6 limiting block A; on the surface of the reed 6 in contact with the movable locking block 7, there is an outwardly protruding reed 6 limiting protrusion 62, and on the side wall of the movable locking block 7, there are a first groove and a second groove that cooperate with the reed 6 limiting protrusion 62; the first groove and the second groove are arranged vertically. When the reed 6 limiting protrusion 62 is aligned with the first concave groove, the locking block A33 and the locking block B71 are in contact with each other on the same horizontal plane; if the reed 6 limiting protrusion 62 is aligned with the second concave groove, the locking block A33 is below the locking block B71.

[0032] The locking pawl 3 controller further includes a movable locking block 7 adjustment control device for controlling the up and down movement of the movable locking block 7; the movable locking block 7 adjustment control device includes a downward pressing mechanism arranged at the top 72 of the movable locking block for pressing the movable locking block 7 downward and a top block arranged on the movable locking block 7 for jacking up the movable locking block 7.

[0033] The downward pressing mechanism includes a dial block 4 arranged at the top 72 of the movable locking block. The dial block 4 includes a dial block arm 42. One end of the dial block arm 42 is connected to the fitting body 1 through a rotating shaft 41. The downward pressing operation of the movable locking block 7 is realized by pressing the dial block arm 42 against the top 72 of the movable locking block.

[0034] The length between the shifting block arm 42 and the rotating shaft 41 is less than or equal to the distance between the outermost point of the top 72 of the movable locking block (the vertex of the side away from the locking pawl 3) and the rotating shaft 41, and the length between the shifting block arm 42 and the rotating shaft 41 is greater than or equal to the distance between the center point of the top 72 of the movable locking block and the rotating shaft 41; this ensures that the shifting block arm 42 is smoothly pressed down when the movable locking block 7 is rotated and pressed down, and will not be stuck. In order to increase the adjustment distance of the movable locking block, a transverse force block can be set at the top 72 of the movable locking block. At this time, the length between the shifting block arm 42 and the rotating shaft 41 can be set to be less than or equal to the distance between the end of the transverse force block away from the locking pawl 3 and the rotating shaft 41, and the length between the shifting block arm 42 and the rotating shaft 41 is greater than the distance between the end of the transverse force block close to the locking pawl 3 and the rotating shaft 41. The length between the shift arm 42 and the rotating shaft 41 is greater than or equal to the distance between the outermost point of the locking pawl 3 (the vertex of a side close to the movable pressure plate 2) and the rotating shaft 41; the locking pawl 3 can be easily shifted to the side away from the movable pressure plate 2 by the shift arm 42.

[0035] The horizontal limit device includes a locking device fixing block 5, and the locking device fixing block 5 includes a movable locking block limiting block 52 arranged on the side of the movable locking block 7 away from the locking pawl 3; the top of the locking pawl 3 facing the movable pressure plate 2 is provided with a sunken step, and the top of the movable locking block limiting block is provided with a locking pawl anti-rotation block 51, and the locking pawl anti-rotation block 51 includes a horizontal portion and an arc-shaped portion, one end of the horizontal portion is connected to the top of the movable locking block limiting block 52, and the other end extends horizontally toward the end where the locking pawl 3 is provided and is connected to one end of the arc-shaped portion, and the other end of the arc-shaped portion is bent downward and abuts against the step at the top of the locking pawl 3.

[0036] The top block is a latch, and a horizontally arranged latch limit block is provided at the bottom of the locking device fixed block 5. A small hole matching the latch is provided on the latch limit block, and a laterally protruding latch action block 76 is provided at the bottom of the movable locking block 7.

[0037] The hardware body 1 is provided with an arc groove that matches the concave surface of the movable clamping plate 2; it can better fit the cable surface, increase the contact area to a certain extent, and ensure reliable transmission of current while increasing friction.

[0038] The following is a detailed description of the working principle of this connection fitting, taking the right cable connection device as an example:

[0039] Locking process: Rotate the dial 4 counterclockwise, so that the dial arm 42 pushes the movable lock block 7 downward, and then the limiting protrusion 62 of the reed 6 enters the unlocking position 74 (the second groove) from the locking position 75 (the first groove). Rotate the movable pressing disc 2 counterclockwise to press the cable Ⅰ8 with a certain diameter. At the same time, the reaction force of the reed 6 presses the locking pawl 3 against the movable pressing disc 2. At this time, the movable ratchet 22 engages with the locking ratchet 31, so that the pressed cable will not loosen. Insert the bolt through the bolt hole 53 to push the movable lock block 7 upward, so that the limiting protrusion 62 of the reed 6 enters the locking position 75 from the unlocking position 74. At this time, the locking block B71 and the locking block A33 are opposite to each other, restricting the rotation of the locking pawl 3, and thus achieving the effect of preventing the movable ratchet 22 from disengaging from the engagement with the locking ratchet 31.

[0040] Unlocking process: Rotate the dial 4 counterclockwise, so that the dial arm 42 pushes the movable lock block 7 downward, and then the limiting protrusion 62 of the reed 6 enters the unlocking position 74 from the locking position 75. At this time, the locking block B71 and the locking block A33 are staggered, allowing the locking pawl 3 to rotate around the second hinge point 34. Rotate the dial 4 clockwise so that the dial arm 42 contacts the pressing point 32 and pushes the locking pawl 3 to rotate counterclockwise around the second hinge point. The movable ratchet 22 disengages from the engagement with the locking ratchet 31. At this time, rotate the movable pressing disc 2 clockwise, and the cable Ⅰ8 can be loosened to achieve unlocking.

[0041] The working principle of the left cable connecting device is similar to that of the above-mentioned right cable connecting device, and the pressing and unlocking of the cable Ⅱ9 can be realized, so no further description will be given here.

[0042] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit them. Although the present invention has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that the technical solutions of the present invention can be modified or equivalently replaced without departing from the spirit and scope of the technical solutions of the present invention, and they should all be covered within the scope of the claims of the present invention.

Claims

1. A connecting fitting for power transmission and distribution lines that adapts to different wire diameters, characterized in that, It includes a fitting body and cable connection devices installed at both ends of the fitting body; the cable connection devices include movable pressing discs for pressing cables onto the fitting body, one end of the movable pressing discs is hinged to the fitting body; on the fitting body corresponding to the other end of the movable pressing discs, there is a movable pressing disc control device for controlling the pressing line spacing between the locked movable pressing discs and the fitting body; The movable pressing discs are in an arc shape conforming to the cables, the concave surfaces of the movable pressing discs face the fitting body, and a number of movable ratchet teeth are arranged circumferentially along the outer side surfaces of the movable pressing discs; the movable pressing disc control device includes a locking ratchet claw for meshing and moving along the movable ratchet teeth on the movable pressing discs and a locking ratchet claw controller for controlling the movement of the locking ratchet claw, the bottom of the locking ratchet claw is hinged to the fitting body, and locking ratchet teeth matched with the movable ratchet teeth are arranged in the upper middle part of the side of the locking ratchet claw facing the movable pressing discs; the locking ratchet claw controller is used to control the locking ratchet claw to rotate around the second hinge point, so that the locking ratchet teeth of the locking ratchet claw approach the movable pressing discs and move along the movable ratchet teeth of the movable pressing discs to achieve locking, or to make the locking ratchet teeth of the locking ratchet claw move away from the movable ratchet teeth of the movable pressing discs to achieve unlocking; The locking ratchet claw controller includes an elastic adjustment device arranged on the side of the locking ratchet claw away from the movable pressing discs for adjusting the acting force between the movable ratchet teeth at the top of the locking ratchet claw and the movable pressing; the elastic adjustment device includes a movable lock block; a horizontal limiting device is arranged on the side of the movable lock block away from the movable lock block; a reed is arranged between the locking ratchet teeth and the movable lock block; On the side of the locking ratchet claw away from the movable pressing discs, there are a horizontally protruding locking block A and a reed limiting block A, the locking block A is arranged in the upper middle part of the locking ratchet claw, and the reed limiting block A is arranged at the bottom of the locking ratchet claw; a locking block B corresponding to the locking block A is arranged in the upper middle part of the movable lock block; The reed is in a downwardly curved arc shape, both ends of the reed apply a slightly outward acting force to the two opposite side walls of the locking ratchet claw and the movable lock block respectively, and both ends of the reed are respectively abutted against the locking block A and the locking block B, the bottom of the reed is abutted against the reed limiting block A; on the surface of the reed in contact with the movable lock block, there is an outwardly protruding reed limiting protrusion, and a first groove and a second groove matched with the reed limiting protrusion are arranged on the side wall of the movable lock block; the first groove and the second groove are arranged vertically, when the reed limiting protrusion is aligned with the first groove, the locking block A and the locking block B are abutted against each other on the same horizontal plane; if the reed limiting protrusion is aligned with the second groove, the locking block A is below the locking block B; The locking ratchet claw controller further includes a movable lock block adjustment control device for controlling the up and down movement of the movable lock block; the movable lock block adjustment control device includes a pressing-down mechanism arranged on the top of the movable lock block for pressing down the movable lock block and a top block arranged on the movable lock block for jacking up the movable lock block; The pressing mechanism includes a shifting block arranged on the top of the movable locking block. The shifting block includes a shifting block arm. One end of the shifting block arm is connected to the fitting body through a rotating shaft. The movable locking block is pressed down by shifting the shifting block arm towards the top of the movable locking block. The horizontal limiting device includes a fixing block of the locking device. The fixing block of the locking device includes a limiting block of the movable locking block arranged on the side of the movable locking block away from the locking pawl. A stepped portion with a sunken top is arranged on the surface of the locking pawl facing the movable pressing disc. A rotation prevention block of the locking pawl is arranged on the top of the limiting block of the movable locking block. The rotation prevention block of the locking pawl includes a horizontal portion and an arc portion. One end of the horizontal portion is connected to the top of the limiting block of the movable locking block, and the other end extends horizontally towards one end of the locking pawl and is connected to one end of the arc portion. The other end of the arc portion bends downwards and abuts against the stepped portion on the top of the locking pawl. The top block is a bolt. A horizontally arranged bolt limiting block is arranged at the bottom of the fixing block of the locking device. A small hole matching the bolt is arranged on the bolt limiting block. A bolt acting block protruding horizontally is arranged at the bottom of the movable locking block.

2. The connecting fitting for power transmission and distribution lines adaptable to different wire diameters according to claim 1, characterized in that, The length between the shifting block arm and the rotating shaft is less than or equal to the distance between the outermost point on the top of the movable locking block and the rotating shaft, and the length between the shifting block arm and the rotating shaft is greater than or equal to the distance between the center point on the top of the movable locking block and the rotating shaft.

3. The connecting fitting for transmission and distribution lines adaptable to different wire diameters according to claim 2, characterized in that, The length between the shifting block arm and the rotating shaft is greater than or equal to the distance between the outermost point of the locking pawl and the rotating shaft.

4. The connecting fitting for transmission and distribution lines adaptable to different wire diameters according to claim 1, characterized in that An arc groove matching the concave surface of the movable pressing disc is arranged on the fitting body.

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